Isabel "Lefty" Álvarez (October 31, 1933 – June 6, 2022) was a Cuban pitcher and outfielder who played in the All-American Girls Professional Baseball League between the 1949 and 1954 seasons. She batted and threw left-handed.Isabel Álvarez was the youngest Cuban player to join the All-American Girls Professional Baseball League, a women's circuit born during World War II and made famous in the 1992 film A League of Their Own.